Whistle-operating mechanism



Nov. 10-, 1925 G.'L. DAVIS ET AL WHISTLE OPERATING MECHANISM 2 Sheets-Sheet 1 lllll |l Filed Dec. 5, 1924 A, 'lerzizLfim /z A TTORNE Y.

NOV. G. L. DAVIS ET AL WHISTLE OPERATING MECHANISM a I,

' Filed Dec. 5. 1924 2 Sheets-Sheet 2 6767273 L.Da1/z'a' 50 der pressure, and

Patented Nov. 10, 1925.

UNITED STATES PATENT OFFICE.

GLENN L. DAVIS AND FRANK W. LAKPTOH, OF SEBDIGFIELD, KIBSOUBI.

' wnrsrnnornnarme manual.

Application filed December 3, 1924. Serial K0. 758,808.

To all wlwm it may concern:

Be it known that we, GLENN L. DAVIS and FRANK W. LAMPTON, citizens of the United States, residing at Springfield, in the county 6 of Greene and State of Missouri, have invented certain new and useful Improvements in Whistle-Operating Mechanism, of which the following is a specification.

This invention relates to devices for operating 'whistle sounding devices, more particularly to the whistles of locomotives and the like, and has for one of its objects to improve the construction and increase the efiiciency and utility of devices of this character.

Another object of this invention is to provide a device of this character, which may be manually operated, or operated by air or steam under pressure without interference between the operating means.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention- Fig. 1 is a sectional view of the improved device.

Fig. 2 is a bottom plan view of a part of the improved device.

Fig. 3 1s a sectional detail illustrating a modification in the construction.

Fig. 4 is an end view of the parts shown in Fig. 3.

In operating locomotives incases of emergency, the engineer is frequently called upon to quickly and simultaneously operate the throttle valve, the air brake mechanism, and

to sound the whistle as an alarm, and this calls for very quick action, and the principle object of the present invention is to so arrange the whistle sounding mechanism that it can be actuated by the engineer without distracting his attention from his other and more important duties. The whistle operating mechanism is so arran ed that it can be operated b a pull leyer o the usual construction, or y employing. steam orair unpreferably operative by the pressure of the oot or other part ofthe body of the engineer, thus obviating the necessity for him to remove his hands from the throttle and air brake lever.

The device embodying this invention is des gned to forma part of the whistle bodv, which whistle body is indicated generally by the numeral 10. This body is of the conventional type and is shown in section to show the interior construction thereof, and working transversely through this body to control a valve 11 arranged-therein, is a valve stem 12- which extends a substantial d stancebeyond the side thereof and provlded with a transverse slot 14 therein adacent the outer end.

Extending from the side of the body 10 is a pair of relatively broad spaced parallel webs 10, which join at their outer ends with the 1nner end 18 of a horizontally arranged cylinder 18, the central portion ofwhich cylinder is in alignment with the valve stem 12 as shown.

Working longitudinally of the cylinder is a piston 19 carrying thereon the rod or stem 20 which passes through the base 18* and normally abuts the outer end of the valve stem 12. Positioned about the piston rod within the cylinder 18 is a spring 22 which normally. maintains the iston 19 at the outer end of the cylinder,a lowin the spring," 17 to mamtain the valve 11 close% under a 1 normal conditions.

Passmg through the removable head 18;" of the cylinder 18, is a pipe line 23 which leads to the cylinder from a valve 24 the stem 25 of which carries the broad head 26 as shown. This valve is adapted to be placed 1n any convenlent location within an engine cab where it'can be operated by the occupants of the cab without trouble.

Extending transversely between the webs 10', 1s a pivot pin 16 upon which an operatmg lever 16 1s mounted. This operating lever projects from between the webs and is adapted to have a pull cord, not shown, secured to the free end thereof so that the lever may be manipulated manually. The head of the lever where it is pivoted between the webs 10 has a finger 15 formed thereon which finger is ada ted to extend through the slot 14 in the va ve stem 12, to actuate the valve stem and valve.

It will be seen from this description the upon the opening of the valve 24 by pressing upon the head 26 steam, compressed an: or other fluid actuating element will be allowed to enter the cylinder 18 and force the piston 19 forwardly to actuate the valve stem and valve 11 and 12 thus opening the whistle valve in the usual manner. Due to the slot 14 in the valve stem 12 the stem can move without the manual control lever 16. 1 When the engineer desires to operate the whistle manually, the control lever can be pulled thus causing the finger 15 to actuate the valve stem 12 and the stem may be moved forwardly to open the valve 11 leav- 15 ing the stem and thus operating independentlyof the piston and piston stem 19 and 20.

The portion of the device which connects the cylinder 18 and body or casing 10 is in 20 the form of spaced webs 10, as shown in Figure 2, which not only serve as connecting means between the cylinder and easing, but also as guides to the lever member 15-16, the pivot 16 of the lever passing through the webs, as shown. 1

By this means the lever: is prevented from lateral displacement, or lateral swaying movement.

Figures 3 and 4 disclose a modification of the structure shown in Figures 1 and 2, in this modification the power cylinder-with which 'the piston 19 is arranged is not formed as a part of the whistle body but is a separate unit and is designed to be placed 3 in any convenient location upon the engine. In this structure there is shown a cylinder 18' having formed at one end the laterally projecting ears 27 through which securingbolts are adapted to be passed to secure the cylinder to a wall 28 or in any other convenient location. Leading into the forward end of the cylinder 18 through the connection 23-, is a fluid pressure line at 23",

Y which may lead from a valve such as that i 46 indicated at 24 and having the stem 25 and head'26 thereon. V I

Within the cylinder 18 there is located the piston 19 mounted upon the stem 20 which extends through the rear end of the cylinder and which carries thereon the laterally extending pin or bolt 29. A s ring 22 surrounds the stem 20 and normally acts to maintain the piston 19" in the forward end of the cylinder. 4 Extending from and designed to operate the engine whistle valve, is a rod 31- having at the rear end the flattened substantially L- 'shaped portion indicated generally by the numeral 31". The L-shaped portion comprises a long member 32 which is connected to the rod 31 and a short member 30 and at the outer end of the angled portion 30 there is formed a pair of spaced inwardly extending portions 30 which, are substantially parallel with the portion 32, and each' of manually controlled means,

. "alve.

/ tured, and

these portions 30 is longitudinally slotted as indicated at 32. The outer end of the stem 20 is positioned between these slotted portions 32 and the securing or pivot bolt 29 carried by the stem is passed through the slots and is designed to ride therein.

The arm 32 of the L-shaped member, is longitudinally slotted as indicated at 32 and located in and extending through this slot is a bolt 35 carried at the outer end of an arm 34 which is mounted upon the shaft '33 and is designed to oscillate with the oscillationv of the shaft. A pull cord or other not shown, is to be attached to this shaft 33 to cause the oscillation of the same end of the arm 34 carri ed thereby.

It will be readily seen that when the whistle valve is to be mechanically operated through the use of structure shown in Figures 3 and 4, that upon the opening of the valve 24, steam, compressed air or other under pressure is admitted to the cylinder 18 and causes the piston 19 to move outwardly or toward the rear end of the cylinder. This movement of the piston and iston pin 20 will cause the L-shaped mem er 31 to be forced backwardly drawing upon the rod 31 and operating the valve of the whistle. The pin 2 will ride in the slot 32 of the long arm 32' and the manually operable means will not be disturbed.

As the valve is to be manually operated, the pull cord, which is not shown, is actuated to oscillate the arm and shaft 33 and 34 and this oscillation of the arm and shaft will cause the pin 35 to be drawn backwardly to pull upon the L-shaped member 31 thus pulling the rod 31 and opening the The pin 29 carried by the piston stem 20 will thus ride in the slots 32 of the members 30 and the piston 19 and attached piston pin 20 will not be disturbed.

The improved device is simple in construction, can be inexpensively manufacapplied without material structural change to whistle devices of various construction.

The preferred embodiment of the invention is disclosed in the drawin s and set forth in the specification but it will be understood that modifications within the scope of the claimed invention may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

Havingthus described the invention What is claimed is:

A- ,valve operating mechanism, compris- 1ng,1n connection with a valve body having avalve stem projecting therefrom and provided with a slot adjacent its outer end, a

pair of relatively broad parallel. spaced webs formed upon and extending from said body, one on each side of said slotted stem end, a cylinder mounted upon and connecting the outer ends of said webs, a piston in said cylinder, a stem carried by said piston and abutting, at its free end, said valve stem end, means for'conveying power to said cylinder, a manually controlled lever having one end pivot-ally mounted between said webs, and an extension carried upon said pivoted end and extendin into and having free movement in the slot 1n said valve stem. 10 In testlmony whereof, we aifix our signa tures hereto.

FRANK W. LAMPTON. GLENN'L. DAVIS. 

